Enable perf profile upload for walltime benchmarks

[MichaReiser]

Enable the walltime performance profile upload for codspeed walltime benchmarks.

This does increase the walltime benchmark runtime by ~2min (from ~8 to ~10 and ~9 to ~11min). I do find the profile's useful when investigating a regression (to get a first impression of where it might be coming from).

[github-actions]

ruff-ecosystem results

Linter (stable)

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Formatter (preview)

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[AlexWaygood]

I feel like we must have had very different experiences when investigating ty performance regressions 😆

To me, the benefits still don't seem worth the cost here. I've found the codspeed flamegraphs very useful when investigating Ruff performance regressions, but I can't recall a time when I've found they've given me any useful information regarding a ty performance regression -- and all our walltime benchmarks are ty benchmarks. A 2-minute increase in CI times is a pretty significant increase, meanwhile.